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Debbie A Lawlor Department of Social Medicine, University of
Bristol, Bristol BS8 2PR
Correspondence to: D A Lawlor d.a.lawlor{at}bristol.ac.uk
Objective:
To assess the associations between
childhood and adulthood social class and insulin resistance.
What is already known on this topic
They are associated with some components of the insulin resistance
syndrome, and adverse childhood environmental factors, possibly poor
nutrition, may lead to insulin resistance and to adult cardiovascular
disease Evidence on the association between childhood social circumstances and
insulin resistance in adulthood, and between childhood social
circumstances and cardiovascular disease risk factors in women, is
scarce What this study adds
Women who were in manual social classes in childhood remained at
increased risk of insulin resistance, dyslipidaemia, and obesity, even
if they had moved into non-manual social classes in adulthood
Design:
Cross sectional survey.
Setting:
23 towns across England, Scotland, and Wales.
Participants:
4286 women aged 60-79 years.
Main outcome measures:
Insulin resistance and other
cardiovascular disease risk factors.
Results:
Belonging to manual social classes in
childhood and in adulthood was independently associated with increased
insulin resistance, dyslipidaemia, and general obesity. The association between childhood social class and insulin resistance was stronger than
that for adult social class. The effect, on insulin resistance and
other risk factors, of belonging to a manual social class at either
stage in the life course was cumulative, with no evidence of an
interaction between childhood and adult social class. Women who were in
manual social classes in childhood remained at increased risk of
insulin resistance, dyslipidaemia, and obesity
even if they moved into
non-manual social classes in adulthood
compared with women who were in
non-manual social classes at both stages.
Conclusions:
Adverse social circumstances in
childhood, as well as adulthood, are strongly and independently
associated with increased risk of insulin resistance and other
metabolic risk factors.
Poor childhood social circumstances are, independently of adult social
circumstances, associated with increased cardiovascular disease
risk
Belonging to manual social classes in childhood and in adulthood is
independently associated with increased insulin resistance,
dyslipidaemia, and obesity in older women
© BMJ 2002
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